From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B2166C54EED for ; Mon, 30 Jan 2023 16:34:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237555AbjA3QeJ (ORCPT ); Mon, 30 Jan 2023 11:34:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237177AbjA3QeI (ORCPT ); Mon, 30 Jan 2023 11:34:08 -0500 Received: from esa6.hgst.iphmx.com (esa6.hgst.iphmx.com [216.71.154.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5659535240 for ; Mon, 30 Jan 2023 08:34:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1675096446; x=1706632446; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=ky9rdQZrVuV224GA8nRKmIT529lW9WNziT8hI6Q98o8=; b=GnbvZnUVjW3SAlXUByScpMZhwbTQdEywhKPjsdOhGrXEupSNRa14faQ6 7r94u9qAxb4iXQSIzBPp+lj321G9emHbnueCSJ0EV3coSnVzvfV189759 mv35QAoes9A5bGBmNghHsggVx0bcAcB1XBzLx8jg+Io73lwbh1XXQjYe2 EHs9GzccSGZG9rPgZfU5fHbRLkz9T2MDyprznhlW4F2mhEMdnVrkdFgJl 4imLrba8m46MbCntIrupKj0cVoegaljXLRHBEi4Y+9CtEB21utKvzhX5M it0ffLG72PpEFzn3V6y5GHAc5TuvA+CplLuLjwe9rtCvK/N/oW8IDs68Y g==; X-IronPort-AV: E=Sophos;i="5.97,258,1669046400"; d="scan'208";a="222149989" Received: from mail-bn1nam02lp2046.outbound.protection.outlook.com (HELO NAM02-BN1-obe.outbound.protection.outlook.com) ([104.47.51.46]) by ob1.hgst.iphmx.com with ESMTP; 31 Jan 2023 00:34:04 +0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=NwQJn3kmRDLIgqjDhlZBv6DVGQUsPr/SnXUjoyqF8HVVHYOx3t5+7ZAPyVsCscyGpqOg7eAhEOBtluxvXA6tuIzxFlhZhh95/BDMrYaVzrdWMZZyMce4KEXGXEX207BbJqa7AxEnOXsCtRHLSmvDI1che4gh+io/ib2dFufQIZQvpV3v8TKBrOrohWNq6RTykCoClR9HwfpCQHVjQkekDJfDlgmEflRKnQUerBxriFOXZUgjWpl1ZTO/iWBDqm9HzoXyjoVk+p58nxsxxvL7AdbSAlv6aKihYXD1oWErBPGcRM0smSUT1WVCze0KPiM56p16NatIpqKlv5hHe3QXfg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=4E15FuHbYvhMi6pRAa6c7VBlL2qzF222OBaFFlu2gik=; b=APdkVGPoOOicwMLgnWRRFP7A3AyZyiyfah3rolWBMBMwksWhetFKf8SSg3TwWkYCdmLelZQrwgUl8gAb/q7wDXvIcHMsfWUD/l18yNQdWbtVKI6t5dTorQ5ULxvq5G+chzmeNt297uP/nrQtS7RUXFkpXi7fOTdEwLO0lYuSt2kmOcKrDhy2Ap9ET1kDO9ZqylJkHpkZ5UYoKWFVdbUm5P4o7AkQ9Y3kOszdnmNYmh2nZN1KlxieI8rS9srDc+usf6RyWuaxXDz15UC5PlycMsBWFEjehlykpNJwpj7Gja63UatZe6mLf4p5ibpwxBhu434+QrTV8V2KKcnQ7IytRw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=wdc.com; dmarc=pass action=none header.from=wdc.com; dkim=pass header.d=wdc.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sharedspace.onmicrosoft.com; s=selector2-sharedspace-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=4E15FuHbYvhMi6pRAa6c7VBlL2qzF222OBaFFlu2gik=; b=BRjNmoJpBq2kDSkeFS4JtLNrvgB5S9a4Zx75WklQwhT28YeYqQm4IhQsQ1KTywBOrVrIHOEGCILJc1via1gdiQW5V6YeSpR18DntiLdPBlQkZuInFn8yfaTOXUgTiGeYGXVSzDubsBwWRo4WIhJdsLZVTiCjg4xT+kl5KgMkTH0= Received: from MN2PR04MB6272.namprd04.prod.outlook.com (2603:10b6:208:e0::27) by BY1PR04MB8776.namprd04.prod.outlook.com (2603:10b6:a03:535::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6043.36; Mon, 30 Jan 2023 16:33:59 +0000 Received: from MN2PR04MB6272.namprd04.prod.outlook.com ([fe80::4fcf:ae46:b9c4:127a]) by MN2PR04MB6272.namprd04.prod.outlook.com ([fe80::4fcf:ae46:b9c4:127a%7]) with mapi id 15.20.6043.023; Mon, 30 Jan 2023 16:33:59 +0000 From: Niklas Cassel To: Shyam Sundar S K CC: Bjorn Helgaas , Damien Le Moal , Bjorn Helgaas , "linux-pci@vger.kernel.org" , Mario Limonciello , Brijesh Singh Subject: Re: [PATCH] pci: Avoid FLR for AMD FCH AHCI adapters Thread-Topic: [PATCH] pci: Avoid FLR for AMD FCH AHCI adapters Thread-Index: AQHZMrlvb9tc/cweD02gtKkaj6nZ/663F4SAgAAOXgCAAAX4AA== Date: Mon, 30 Jan 2023 16:33:59 +0000 Message-ID: References: <20230130152111.GA1673431@bhelgaas> <6bcf0e30-8a33-dbe5-415b-593f916f0fa5@amd.com> In-Reply-To: <6bcf0e30-8a33-dbe5-415b-593f916f0fa5@amd.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=wdc.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: MN2PR04MB6272:EE_|BY1PR04MB8776:EE_ x-ms-office365-filtering-correlation-id: 953c8020-2ad4-4ea0-2d8d-08db02dfc9f6 wdcipoutbound: EOP-TRUE x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR04MB6272.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230025)(7916004)(4636009)(39860400002)(366004)(346002)(376002)(136003)(396003)(451199018)(54906003)(5660300002)(41300700001)(316002)(8936002)(91956017)(6916009)(4326008)(66946007)(8676002)(76116006)(66476007)(66556008)(64756008)(66446008)(71200400001)(2906002)(6486002)(478600001)(6506007)(53546011)(26005)(6512007)(186003)(9686003)(83380400001)(33716001)(38100700002)(122000001)(86362001)(82960400001)(38070700005);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?zq2417tPurZ7ZJY64NcXTBTqGOKgNkyy3w74N+oQut9slM3YdZWhQZOQqjqr?= =?us-ascii?Q?i8ZrU7o2vpqlqoa1v7DoOD6JMKhFoX25JLyG5h3+3XGav5DpqsRKycW8K3c/?= =?us-ascii?Q?ElcYXXpCxtUlq9iV10SgZV3JCQYhdOElUlL85E1BUL66JbnYH1nsBI96BnEh?= =?us-ascii?Q?HBHfCB3C+guovFXNRyP8x+GwVNqWcieIdosIei1EwIn9z8QpxEG7oR7s1SC5?= =?us-ascii?Q?785T7VMzvwlqvg88WfvMgdZe10TLCnwTgxP8+uVBhsY1Xhht3V0uNwm3FXyk?= =?us-ascii?Q?EAYApWNJzVfl4W9DxmfW3e/xad9bOcfcid4KvZUiRu+sUdG48pEYgdkaPn2V?= =?us-ascii?Q?aPJWfuSovYYV0seGTT2mQhFJa427wQVdT8FOiCP2NXW9Xi8AJslJp3Wa0bOs?= =?us-ascii?Q?2F1hEeurzDOhqOj8uzMEtn7evbAv56Sdy4tom3sMzze1frXULadtun8QFJj+?= =?us-ascii?Q?Fejk5yAzUMdE4oDvNDuJPB4O7C6VsoW8Ropzv8/xYX+81IGy8iJ9wgZXB8xO?= =?us-ascii?Q?iCTL7gndx99QYOFuK1S468X5zerRKjrvCXTRS3kCjS6OvCx1hYfIOt4c2lR3?= =?us-ascii?Q?B/dc0xD5WP3VI62N2P17iP9neiFhkVzfuM736ZRtGD73wLaCaCYuKLl5bxS8?= =?us-ascii?Q?6s2NNiyhfa15Qu4GERactFhbU8m8g+vm6kU3ZNTqzcIMkoiPFYLdtoISiZNx?= =?us-ascii?Q?ltmlPRQgW6+DrJ651MllwsVHWvAPG3NoYrsQsNPhkxz5TDXZDnFX7KzU4M0B?= =?us-ascii?Q?lFrfS3VJBOyU44TsAhcSbvMcoxzMDXz8cn8tKBjKi1Jxrn4VU/jEGRKq1stk?= =?us-ascii?Q?RTd6WdjCTezIVb4jg5XtisHS9mX5ol7dn4LSszJUn/Vs6ch1n34I5M8kveRQ?= =?us-ascii?Q?ShA1XcbvnYxGzdXY+mfNfvxnR78EUaFvHaf9DbygMU0n1H3oejYUGZtIsxoL?= =?us-ascii?Q?YfVNQ8mE+vi74lx7xYcc8lmpALyLM3eX3GNB0mn9Vuuo178Qrc8Ck9UyQfRV?= =?us-ascii?Q?Qp8jvine3xMBZ30n+DhFpKr6IUy9AXLbnbryiPmref8CFfiWixvLi0bSUi3g?= =?us-ascii?Q?k+oP0CeXlm0jp9ZOmAVi0WcHvrVAYWF16oJsonJmJmPXAs6BsHI0Dl3q1zaG?= =?us-ascii?Q?oKfQa9zwOrcf2A7wJVIiSItZMI7nkDLBlKoRKScqNh31FSUVVlD10iIjzNkg?= =?us-ascii?Q?d3qIU1P6HQOXE0dBNzG1tK8KdArCX0EZVzS3evFGEml+TvHxJz4MEvfA12DA?= =?us-ascii?Q?Ga8CtIp426IYcOUiBwFwKERo85GV1EEH284aRGuf0rSZ49Cey51dvBCbx607?= =?us-ascii?Q?fWdKoOx44P/8CiJy62E3439ZBjQgLL+J7DUbaZsqGb7gHFpdOuFT6P74QLaC?= =?us-ascii?Q?hPv7iyVG38SR7AI5aAWWdn2tLD6M3sSFqYUteVSn27tbpjCtdmNtdgRvLxIJ?= =?us-ascii?Q?TFQ6/pQyCSWoSQa1sFAdWCHbD5iG8eBsfKso8dP1bAiLg0Yoh5os4mP0G4xY?= =?us-ascii?Q?9zQx6ObXx151jeOcWmVZClA70rBKOmjIasNq0olyjPFZFdj2L3koLb3CYr2N?= =?us-ascii?Q?QdKItk8eGS+r8JHPi1xQ6g34EJ7ybbFU1xfDF0q7MkZyMLsIFjgYTPMHbFs6?= =?us-ascii?Q?rQ=3D=3D?= Content-Type: text/plain; charset="us-ascii" Content-ID: <2B2F2EBBF2302C4A868C60D7E8053300@namprd04.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR04MB6272.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 953c8020-2ad4-4ea0-2d8d-08db02dfc9f6 X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Jan 2023 16:33:59.2217 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jPptPoweOJswIcHVGBWNK+SGmNOxOCMTXMEJb9Gkfir039mOto020adP4fYQ19u8fVHER5lxNgtqQJ8hAFsOnA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR04MB8776 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, Jan 30, 2023 at 09:42:36PM +0530, Shyam Sundar S K wrote: >=20 >=20 > On 1/30/2023 8:51 PM, Bjorn Helgaas wrote: > > [+cc Mario, Shyam, Brijesh] > >=20 > > On Sat, Jan 28, 2023 at 10:39:51AM +0900, Damien Le Moal wrote: > >> PCI passthrough to VMs does not work with AMD FCH AHCI adapters: the > >> guest OS fails to correctly probe devices attached to the controller d= ue > >> to FIS communication failures.=20 > >=20 > > What does a FIS communication failure look like? Can we include a > > line or two of dmesg output here to help users find this fix? > >=20 > > AMD folks: Can you confirm/deny that this is a hardware erratum in > > this device? Do you know of any other devices that need a similar > > workaround? >=20 > Niklas, can you send the list of AHCI device id present on your system? > perhaps a lspci output? Of course, here you go: # lspci -vvvnns 49:00.0 49:00.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA= Controller [AHCI mode] [1022:7901] (rev 51) (prog-if 01 [AHCI 1.0]) Subsystem: Super Micro Computer Inc H12SSL-i [15d9:7901] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-= Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- SERR- Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=3D0mA PME(D0-,D1-,D2= -,D3hot+,D3cold+) Status: D0 NoSoftRst+ PME-Enable- DSel=3D0 DScale=3D0 PME- Capabilities: [64] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <4us= , L1 unlimited ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ Slo= tPowerLimit 0W DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq- RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLRese= t- MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- T= ransPend- LnkCap: Port #0, Speed 16GT/s, Width x16, ASPM L0s L1, Exit= Latency L0s <64ns, L1 <1us ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+ LnkCtl: ASPM Disabled; RCB 64 bytes, Disabled- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 16GT/s, Width x16 TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Range ABCD, TimeoutDis+ NROPrP= rP- LTR- 10BitTagComp+ 10BitTagReq- OBFF Not Supported, Ext= Fmt- EETLPPrefix- EmergencyPowerReduction Not Supported, EmergencyPo= werReductionInit- FRS- TPHComp- ExtTPHComp- AtomicOpsCap: 32bit- 64bit- 128bitCAS- DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR-= 10BitTagReq- OBFF Disabled, AtomicOpsCtl: ReqEn- LnkCap2: Supported Link Speeds: 2.5-16GT/s, Crosslink- Reti= mer+ 2Retimers+ DRS- LnkCtl2: Target Link Speed: 16GT/s, EnterCompliance- SpeedD= is- Transmit Margin: Normal Operating Range, EnterModi= fiedCompliance- ComplianceSOS- Compliance Preset/De-emphasis: -6dB de-emphasis, 0= dB preshoot LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationCom= plete+ EqualizationPhase1+ EqualizationPhase2+ EqualizationPhase3+ LinkEquali= zationRequest- Retimer- 2Retimers- CrosslinkRes: unsupported Capabilities: [a0] MSI: Enable+ Count=3D16/16 Maskable- 64bit+ Address: 00000000fee00000 Data: 0000 Capabilities: [d0] SATA HBA v1.0 InCfgSpace Capabilities: [100 v1] Vendor Specific Information: ID=3D0001 Rev= =3D1 Len=3D010 Capabilities: [150 v2] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- = RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- = RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- = RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFa= talErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFa= talErr+ AERCap: First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECR= CChkCap- ECRCChkEn- MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap- HeaderLog: 00000000 00000000 00000000 00000000 Capabilities: [270 v1] Secondary PCI Express LnkCtl3: LnkEquIntrruptEn- PerformEqu- LaneErrStat: 0 Capabilities: [2a0 v1] Access Control Services ACSCap: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamF= wd- EgressCtrl- DirectTrans- ACSCtl: SrcValid- TransBlk- ReqRedir- CmpltRedir- UpstreamF= wd- EgressCtrl- DirectTrans- Capabilities: [400 v1] Data Link Feature Capabilities: [410 v1] Physical Layer 16.0 GT/s Capabilities: [440 v1] Lane Margining at the Receiver Kernel driver in use: ahci Kind regards, Niklas=